40 results about "Copper carbonate" patented technology

The invention relates to the field of catalysts, in particular to a preparation method of a green and efficient copper catalyst. Comprising the following steps: (1) mixing basic cupric carbonate, ammonia water and water, adding ammonium salt at the same time, and preparing a copper ammonia solution as a precursor solution at room temperature; (2) mixing the precursor solution with a carrier or a carrier precursor to realize active component loading and catalyst preparation; and (3) filtering, washing, drying and roasting the mixed system in the step (2) to prepare the copper-based catalyst. According to the preparation method of the copper ammonia complexing precursor solution, preparation of the copper ammonia complexing solution at room temperature can be achieved, heating operation in the precursor preparation process is avoided, meanwhile, the nitrogen content of the system and nitrogen emission in the subsequent roasting process can be reduced by preparing the copper-based catalyst through the basic copper carbonate precursor, and efficient and green preparation of the catalyst is achieved.

Provided are copper nanoparticles that: (I) have excellent dispersibility in an organic solvent and thus makes a paste containing the copper nanoparticles from which a highly smooth coating film can be formed; and (II) have excellent sinterability at low temperatures. At least a portion of the surface layer of each of the copper nanoparticles coated by a reducing agent is a film that contains copper oxide and optionally contains copper carbonate. The surfaces of the copper nanoparticles are coated with a reducing agent, where the mass carbon concentration is 0.10% to 2.00%.

The invention provides a method for preparing electronic-grade copper oxide by using circuit board acidic etching waste liquid, and belongs to the field of copper resource recovery. The method comprises the following steps: sequentially carrying out impurity removal, concentration crystallization, salt-alkali reaction and cleaning on the circuit board acidic etching waste liquid, and collecting to obtain a copper hydroxide crude product; dissolving and recrystallizing to obtain a copper hydroxide refined product; a carbonized ammonia water solution is added to react with the copper hydroxide refined product, and ammonia cupric carbonate is obtained after adsorption and purification; adding a surfactant and a zinc salt additive, and stirring; drying to obtain modified basic cupric carbonate; carrying out selective etching on the modified basic cupric carbonate by adopting dilute acid to obtain basic cupric carbonate particles; and calcining the basic cupric carbonate particles at 300-500 DEG C to obtain the copper oxide powder with the honeycomb structure. According to the method, on the basis of the basic step of recovering copper resources from the circuit board acidic etching waste liquid, the treatment steps of purification, grain refinement, porous etching and the like are added, so that the purity and the activity performance of a final copper oxide product are improved, and the electronic-grade copper oxide is prepared.

The invention relates to the technical field of etching waste liquid treatment, and provides a nickel-containing etching waste liquid treatment method which comprises the following steps: 1, neutralizing and extracting copper; step 2, nickel deposition; step 3, evaporative crystallization; wherein the step I specifically comprises the following steps: slowly adding sodium bicarbonate into the nickel-containing waste liquid, stirring to adjust the pH value of the waste liquid to weak acidity, preferentially forming a basic cupric carbonate Cu2 (OH) 2CO3 precipitate when Cu < 2 + > is within the pH value range, and stably remaining Ni < 2 + > in the solution, and carrying out operations such as filtering separation and the like; and the step 2 specifically comprises the treatment of adding sodium hydroxide into the nickel-containing filtrate from which most of copper is removed to adjust the pH value to be neutral and the like. According to the technical scheme, the problems that according to an existing nickel-containing etching waste liquid treatment method, the harmless treatment effect is achieved in a chemical precipitation mode, the main purpose is to stabilize solid nickel, although the emission requirement is met, the waste liquid still contains copper, soluble salt and other components, and huge resource waste is caused by direct emission are solved.

This invention relates to the field of non-ferrous metal smelting technology and discloses a high-recovery, emission-reducing copper anode mud treatment process with controlled potential. Each step employs a controlled potential method to regulate the metal leaching rate and reduction rate, thereby reducing the loss rate of valuable metals in each step and improving the overall metal recovery rate. A sulfidation process is used to treat the antimony-bismuth removal solution, enriching antimony and bismuth in the form of sulfides. An evaporation crystallization method is used to open most of the copper in the anode mud in the form of crude copper sulfate. While enriching antimony and bismuth, the production of basic copper carbonate is significantly reduced, eliminating the "rotary kiln selenium distillation" and "water leaching copper separation" processes, and reducing system acid expansion caused by the "rotary kiln selenium distillation" process. By using the recycled reduction solution and secondary gold separation solution as acid sources for the antimony-bismuth removal process and the primary gold separation solution, the waste acid reuse rate and valuable element recovery rate can be improved. This effectively reduces the total wastewater discharge, simplifies the process flow, and improves the recovery rate of valuable metals.

Provided is a copper oxide, for which the specific surface area measured by a nitrogen adsorption method is 2.9 m2 / g or more, and the tap density measured in accordance with JIS Z 2512: 2012 is less than 1.1 g / cm3.

The application discloses a kind of composite antibacterial antiviral agent and preparation method, protective glaze, ceramic tile and preparation method, it is related to ceramic tile technical field.The preparation method of the composite antibacterial antiviral agent of the present application includes the following steps: after mixing silicon dioxide, aluminum oxide, copper carbonate, strontium carbonate, boron oxide, soda ash and nickel hydroxide, melt under reducing atmosphere, obtain melt, after melt is quenched by water, dried and broken, obtain green antibacterial antiviral frit;Mix copper carbonate, calcined zinc oxide, silver-loaded zirconium phosphate and calcined alumina to obtain red antibacterial antiviral agent;Green antibacterial antiviral frit and red antibacterial antiviral agent are mixed to obtain composite antibacterial antiviral agent.The composite antibacterial antiviral agent with good antibacterial antiviral effect and without affecting the original color of ceramic tile can be prepared, which is suitable for ceramic tile field, and solves the problem that materials with good antiviral effect easily affect the original decorative color of ceramic tile.

This invention relates to a deodorant, its preparation method, and its application, belonging to the field of deodorization technology. The invention provides a deodorant preparation method, specifically involving the following steps: a mineral-based deodorizing carrier, anhydrous calcium chloride, magnesium stearate, calcium peroxide, ferrous sulfate, basic copper carbonate, zinc oxide, and mesoporous silica are orderly mixed to obtain a composite powder. This powder is then mixed with a sodium silicate aqueous solution, kneaded, pressed into shape, and cured to obtain a raw blank. The raw blank is then immersed in a composite treatment solution containing silica sol, a silane coupling agent, and nano-titanium dioxide. After removal, it is dried and heat-treated to obtain the deodorant. The deodorant prepared by this invention can be applied to kitchens, bathrooms, and shoe cabinets, exhibiting excellent deodorizing effects.

The invention relates to the field of bronze ware, in particular to a bronze ware distressing method which comprises the following steps: S1, cleaning the surface of a bronze ware, uniformly coating the cleaned surface of the bronze ware with an etchant, and standing to obtain an oxidized bronze ware; s2, the surface of the oxidized bronze ware is washed until eluate is clear, then the whole oxidized bronze ware is soaked in a sodium bicarbonate solution for 24 h, the pH is 7.5-8, and the rusted bronze ware is obtained; s3, the rusted bronze ware is washed and dried, and the antique bronze ware is obtained; the corrosion inducing agent is at least one of silver nitrate, copper chloride and aspartic acid. According to the method, the surface of the bronze ware is eroded through the corrosion inducing agent, then the basic carbonate aerugo rust layer is formed on the erosion layer of the bronze ware through sodium bicarbonate induction, and finally the antique bronze ware is obtained through washing and drying, so that the antique effect of the surface of the bronze ware can be achieved within a short time; and uniform distribution of the antique layer on the surface of the bronze ware can be ensured.

The application discloses MgCuNiMn-O polygranules and a preparation method and application thereof, and comprises the following steps: mixing magnesium carbonate, manganese carbonate, copper carbonate, nickel carbonate and sodium bicarbonate, uniformly performing dry ball milling to obtain a mixed powder; adding a mixed solution of an organic binder and a dilute solvent into the obtained mixed powder, performing wet ball milling to prepare a slurry; performing spray granulation on the obtained slurry to obtain spherical precursor granules; performing programmed temperature annealing treatment on the obtained spherical precursor granules in a protective atmosphere; and after cleaning and drying the obtained annealing product, the MgCuNiMn-O polygranules are obtained. The method can prepare granules with spherical morphology, multi-stage pore structure and high specific surface area through component precise regulation and a double pore-forming mechanism, effectively solves the bottleneck of uneven dispersion of multi-component materials and microstructure regulation difficulty, and the obtained product has excellent electromagnetic wave absorption performance and application potential in the wave absorption field.

The application discloses a targeted drug for treating glioma and a preparation method and application thereof. Alkaline copper carbonate, dopamine hydrochloride and ammonia water are mixed and dissolved, then defatted cotton is added, stirring is conducted until the defatted cotton is dissolved, and copper ammonia fiber solution is obtained by reaction at room temperature; a mixed solution of soluble copper ion salt, zinc ion salt and cobalt ion salt is prepared as a metal ion acid bath solution; the copper ammonia fiber solution is slowly injected into the metal ion acid bath solution, stirring reaction is completed, and then centrifugal separation is conducted; the obtained precipitate is added into a temozolomide solution, ultrasonic treatment is conducted under ice bath, and then centrifugal separation is conducted to obtain a precipitate; the precipitate is washed and freeze-dried to obtain polydopamine modified temozolomide adsorbed copper ammonia fiber; finally, the obtained polydopamine modified temozolomide adsorbed copper ammonia fiber is added into phosphate buffer solution containing Anti-ATRX antibody for incubation, and then washing, freeze-drying and grinding are conducted to obtain the product.

The invention provides a preparation method of electronic-grade copper oxide powder, and relates to the technical field of copper oxide. According to the method, the barium carbonate is adopted to precipitate the copper sulfate solution, the obtained mixed solid is dissolved by the ammonia water and then is separated into the solid and the copper ammonia complex solution, the copper ammonia complex solution is heated and decomposed into basic copper carbonate, the basic copper carbonate is calcined to obtain the copper oxide powder with high purity and high activity, and the content of metal impurities is very low.

This provides an improved process for forming wash-coated catalyst articles. [Solution] (a) At least the following components: (i) H + or NH4 + A method comprising: (ii) forming a slurry by mixing together a crystalline molecular sieve, wherein the crystalline molecular sieve is a microporous molecular sieve, (ii) an insoluble active metal precursor containing copper(II) carbonate, and (iii) an aqueous solvent, wherein the slurry has a solid content of up to 50% by weight, and step (a) is carried out at a temperature in the range of 10 to 35°C; (b) coating a substrate with the slurry formed in step (a); and (c) firing the coated substrate formed in step (b) to form a catalyst layer on the substrate. Further providing catalyst articles and exhaust systems suitable for use in the selective catalytic reduction of nitrogen oxides.

The invention belongs to the technical field of synthesis gas chemical industry and catalytic materials, and particularly relates to a copper-based catalyst for hydrogen production through methanol cracking and a preparation method thereof. The catalyst comprises a catalyst metal active component, an auxiliary agent and a catalyst carrier, wherein the metal active component is copper and can be one of copper nitrate, copper carbonate and copper sulfate, and the content of the metal active component is 70-88%. Compared with the prior art, the catalyst provided by the invention provides a strong Lewis acid site, can promote migration and deep dehydrogenation of methoxyl intermediates for methanol dehydrogenation on the surface of Cu metal, remarkably improves the selectivity of main products CO and H2, and reduces the selectivity of intermediate products dimethyl ether and methyl formate.

The present application relates to the technical field of ceramic tiles, and in particular to a marble ceramic tile with locally positioned micro light and a preparation method thereof. The present application discloses a marble ceramic tile with locally positioned micro light, which comprises a body, and further comprises a glaze layer, a flash glaze layer and a protective glaze layer attached to the body in sequence. The flash glaze material for forming the flash glaze layer comprises the following raw materials in parts by weight: flash powder 30-50 parts, high-calcium dry particles 10-30 parts and protective powder 1-3 parts. The flash powder comprises the following raw materials in parts by weight: iron oxide 5-8 parts, manganese oxide 5-8 parts, copper carbonate 5-8 parts, cobalt oxide 5-8 parts and fluorescent powder 10-18 parts. The marble ceramic tile of the present application replaces the externally added flash phase with spontaneous crystallization of the flash glaze material during the firing process, which can impart flash decoration to the glaze surface without affecting the thorough and transparent characteristics of the glaze layer itself, and can also eliminate the impurity and jarring feelings of the glaze surface.

The utility model relates to the technical field of basic cupric carbonate drying, and discloses a standby quick drying device for basic cupric carbonate, which comprises an outer box body and supporting seats, the supporting seats are fixedly connected to the four corners of the bottom end of the outer box body, the bottom ends of the supporting seats are fixedly connected with a bottom frame, and the outer box body is fixedly connected with the bottom frame. A first reserved groove is formed in the front end of the bottom frame, a filtering frame is placed in the first reserved groove, and a first handle is fixedly connected to the front end of the filtering frame. According to the quick drying device for preparing the basic copper carbonate for standby use, the bottom frame, the first reserved groove, the filtering frame, the first handle and the opening valve are arranged, dried copper carbonate can be fed into the filtering frame through a discharging pipe, non-dried caked copper carbonate is conveniently filtered through a filtering net plate in the filtering frame, feeding and drying are facilitated, and the drying efficiency is improved. And the problems that filtering is not convenient after discharging, and caking copper carbonate which is not dried is likely to be mixed into the interior are solved.

The invention belongs to the technical field of synthesis gas chemical industry and catalytic materials, and particularly relates to a copper-based catalyst for hydrogen production through methanol cracking and a preparation method thereof. The catalyst comprises a metal active component, a catalyst auxiliary agent and a catalyst carrier, the metal active component is copper and is selected from one of copper nitrate, copper carbonate and copper sulfate, and the composition range is 55-75%; the catalyst carrier is Al, the Al source comprises at least one of Al < 3 + > salts, and the composition range is 10-20%; the catalyst auxiliary agent comprises at least one of zinc, magnesium and barium; the composition range is 1-20%. Compared with the prior art, the catalyst has the advantages that particles are recombined through a'dissolution-reprecipitation 'process, crystal defects are reduced, a more stable precursor structure is formed, and more uniform deposition of Cu species is promoted during subsequent precipitation with CuZnAl salt, so that the synergistic effect between Cu and Zn and Al is enhanced, and the activity and stability of the catalyst are effectively improved.

The application discloses a basic copper carbonate gallium composite oxide and a preparation method and application thereof, and relates to a method for preparing a basic copper carbonate gallium composite oxide by hydrothermal reaction of a mixed solution containing copper nitrate, gallium nitrate and urea. The method has the advantages of simple preparation process, good repeatability and convenience for batch synthesis of the composite oxide catalyst, and the catalyst has an ultra-wide stable potential range, the stable potential range is wide to-0.6~‑1.8V, and the CO / H2 ratio can be stably adjusted. The basic copper carbonate gallium composite oxide is prepared, CO2 is electrically reduced to prepare syngas, the syngas efficiency is above 90%, and the catalyst is expected to be widely applied in the field of electric catalysis.

The invention relates to the technical field of preparation of active copper oxide, in particular to a process for preparing active copper oxide by taking crude copper sulfate as a raw material, which comprises the following steps: reacting an aqueous solution of crude copper sulfate with a certain amount of H2O2, and then adjusting the pH value for the first time by using a NaOH solution; adding a ferric sulfate solution into the obtained solution, heating and stirring, and then adjusting the pH value for the second time by using a NaOH solution, so that impurity ions form precipitates, thereby obtaining a refined copper sulfate solution; adding a certain amount of sodium carbonate precipitant into the refined copper sulfate solution, and reacting to generate basic cupric carbonate precipitate; washing and drying the basic cupric carbonate precipitate for multiple times, and calcining the basic cupric carbonate precipitate in a muffle furnace to generate copper oxide; the crude copper sulfate is used as the raw material to prepare the active copper oxide, the crude copper sulfate is a relatively cheap industrial raw material and is wide in source, and when the crude copper sulfate is used as the raw material for preparing the active copper oxide, the production cost can be reduced, and the economic benefit can be improved.

The application is suitable for the technical field of wastewater treatment and resource recovery, and provides a resource treatment method for electroplating waste liquid, which is aimed at the waste liquid containing copper sulfate and sulfuric acid generated in the copper electroplating process, copper sulfate is generated by adding copper oxide, copper hydroxide or copper carbonate and the like into the waste liquid to react with free sulfuric acid in the waste liquid; then, the saturated copper sulfate solution after reaction is controlled in speed and cooled to crystallize, and high-purity copper sulfate crystals are separated; the crystallization mother liquor can be recycled to the reaction step to further improve the recovery rate, and finally, the tail liquid enriched with impurities is subjected to pH adjustment and ion exchange resin adsorption treatment to realize standard discharge. The application can efficiently convert sulfuric acid and copper ions in the waste liquid into electronic-grade copper sulfate products which can be directly reused in the electroplating process, realizes high-value recovery of resources, and reduces disposal cost and environmental pressure.

The invention discloses MgCuNiMn-O polymeric particles and a preparation method and application thereof.The preparation method comprises the following steps that magnesium carbonate, manganese carbonate, cupric carbonate, nickel carbonate and sodium bicarbonate are mixed and subjected to dry ball milling to be uniform, and mixed powder is obtained; adding a mixed solution of an organic binder and a diluting solvent into the obtained mixed powder, and carrying out wet ball milling to prepare slurry; carrying out spray granulation on the obtained slurry to obtain spherical precursor particles; carrying out temperature programming annealing treatment on the obtained spherical precursor particles in a protective atmosphere; and the obtained annealing product is cleaned and dried, and then the MgCuNiMn-O polymer particles are obtained. According to the method disclosed by the invention, through precise component regulation and control and a dual pore-forming mechanism, particles with spherical morphology, a hierarchical porous structure and a high specific surface area are prepared, the bottlenecks that a multi-component material is non-uniform in dispersion and a microstructure is difficult to regulate and control are effectively solved, and the obtained product shows excellent electromagnetic wave absorption performance and application potential in the field of wave absorption.

The utility model relates to the field of basic cupric carbonate production waste liquid, and discloses washing equipment for basic cupric carbonate production waste liquid, which comprises a pretreatment box, an aeration tank and a centrifugal cyclone, the left side of the aeration tank is provided with the pretreatment box, the right side of the aeration tank is provided with the centrifugal cyclone, and the bottom end in the pretreatment box is provided with eight groups of rotating seats. According to the water washing equipment for the basic cupric carbonate production waste liquid, the pretreatment box is arranged, the waste liquid enters the pretreatment box from the water inlet, large particles and impurities are filtered out through the filter screen, small-particle impurities passing through the filter screen can be adsorbed to the filter cartridge, the filter cartridge is driven to rotate through the rotating motor, and the waste liquid is filtered out through the filter screen. The contact between the filtering assembly and the waste liquid can be improved through rotary filtering, the subsequent washing efficiency is greatly improved, and the problem that the washing efficiency is reduced due to the fact that the filtering effect is influenced by large-particle suspended solids in the washing process is solved.

The present invention is a fungicidal paste and method of controlling fungal disease in plants which provides effective application, enhanced adhesion to the plant matter. The fungicidal paste is composed of highly concentrated aqueous suspension of basic copper carbonate with copper content 25-35% w / w (water content 30-50% w / w) with an addition of adhesive substance and microelements.

The invention relates to a cyanide-free brass tin electroplating process which comprises the following steps: adding basic cupric carbonate, zinc oxide, sodium stannate, conducting salt, potassium hydroxide and potassium carbonate into a plating tank, and dissolving in deionized water; then adding a brightening agent, a complexing agent and a wetting agent, and adding deionized water to a set liquid level of the plating solution; the workpiece is put into the plating solution for electroplating, and the metal ion concentration, the current density and the temperature of the plating solution are controlled to be within the preset range; the brightener comprises the following components in percentage by mass: 0.5% of nicotinic acid, 1% of polyethyleneimine and 98.5% of deionized water; the wetting agent is an alkyl polyglucoside solution with the mass concentration of 0.5%. The active groups of nicotinic acid can slow down the reduction rate of metal ions, refine plating grains, improve the bright effect of the plating and reduce the porosity. The polyethyleneimine can optimize the crystal structure of the coating, disperse impurities to avoid the formation of rigid defect points, and improve the flexibility of the coating. The alkyl polyglucoside can reduce the surface tension of the plating solution, so that the workpiece is uniformly soaked by the plating solution, bubble retention is avoided, and the flatness of a plating layer is improved.

The present invention discloses a method for removing hydrogen sulfide from industrial gases, belonging to the field of hydrogen sulfide treatment. The method employs copper carbonate, copper hydroxide, and an oxygen-containing protonic acid as a composite desulfurization medium. Carbon dioxide generated in situ during the process is coupled with hypergravity to enhance the absorption and ionization reaction of hydrogen sulfide. The hydrogen sulfide absorption reaction and copper sulfide separation are simultaneously performed in a hypergravity reactor. This method has the advantages of rapid desulfurization, high desulfurization efficiency, a small equipment footprint, low investment costs, and the by-products of copper sulfide and gypsum. The process is more economical than complex iron methods and biological desulfurization methods.

The invention belongs to the cross technical field of nanometer materials and biomedicine, and particularly relates to a degradable cell patch platform based on two-dimensional silylene nanosheets and a preparation method and application of the degradable cell patch platform. Comprising a silylene nanosheet substrate, a basic cupric carbonate nanoparticle load and a surface modifier, the thickness of the silylene nanosheet is 1 nm-10 nm, the transverse size of the silylene nanosheet is 300-600 nm, basic cupric carbonate nanoparticles are loaded on the surface of the substrate in an in-situ growth mode, and the load rate of the basic cupric carbonate nanoparticles is 2 wt.%-30 wt.%; and the surface of the matrix is modified with a surface modifier human serum albumin. The surface of the silylene nanosheet matrix is modified and loaded with the basic copper carbonate nanoparticles and the human serum albumin, multifunctional integration is achieved, the patch can be efficiently attached to a cell membrane, the loaded substance is slowly released in the degradation process, the uptake and killing effects of tumor cells are remarkably enhanced, meanwhile, long-term biotoxicity is avoided, and the patch has a good application prospect. The invention is suitable for targeted drug delivery and tumor treatment.

The invention belongs to the technical field of jun porcelain manufacturing, and particularly relates to copper red glaze with earthworm mud patterns and a preparation method thereof, and the copper red glaze is prepared from the following raw materials: basic glaze, a coloring agent combination, a texture inducer and a fluxing agent; the colorant combination comprises one or two of cuprous oxide and cupric carbonate; the texture inducer comprises one or two of silica and calcined zinc oxide; the fluxing agent comprises one or more of feldspar, plant ash and glass powder; the preparation method comprises the following steps: proportioning and ball-milling; uniformly applying the glaze slip to the surface of a ceramic body subjected to biscuit firing; naturally drying the glazed green body at normal temperature or drying the glazed green body at low temperature of 40-60 DEG C; the dried green body is placed in a kiln for green body firing; according to the method, the texture inducer is scientifically proportioned, the firing system is optimized, and particularly, a key slow cooling process window is designed, so that the method can actively guide and not passively depend on the furnace transmutation, and the generation of the earthworm mud grains becomes stable and controllable.

The present invention provides a method for recovering highly active copper oxide from alkaline etching waste liquid based on an ammonia distillation method, and belongs to the field of resource recovery of copper-containing waste liquid. The method comprises the following steps: filtering the alkaline etching waste liquid to remove suspended matter; dimethylglyoxime-diatomaceous earth adsorption coupled impurity removal; the etching waste liquid after impurity removal is subjected to a gradient ammonia distillation treatment combining normal pressure ammonia distillation and negative pressure ammonia distillation to obtain a crude basic copper carbonate product; the crude basic copper carbonate product is dissolved in a urea solution to obtain a tetraammine copper carbonate solution; a secondary negative pressure ammonia distillation treatment is performed to obtain a fine basic copper carbonate product with a spherical honeycomb structure; graded calcination and water vapor activation are synergistically treated to obtain highly active copper oxide. The present invention combines dimethylglyoxime-diatomaceous earth coupled impurity removal, gradient ammonia distillation, urea dissolution + secondary ammonia distillation and graded calcination + water vapor activation treatment processes to improve the quality and performance of copper oxide products, obtain highly active copper oxide powder for PCB electroplating, and realize efficient recycling of copper resources.

The invention relates to the technical field of fuel cells, in particular to a method for improving performance of a direct coal fuel cell by using basic carbonate, which comprises the following steps: placing coal, basic carbonate and electrolyte in an anode chamber of the fuel cell, basic carbonate being selected from at least one of basic nickel carbonate, basic copper carbonate and basic cobalt carbonate, and electrolyte being selected from at least one of basic copper carbonate and basic cobalt carbonate; wherein the basic carbonate is an additive, and the mass ratio of the fuel to the basic carbonate to the electrolyte is 1: (0.05-0.4): (2-10). According to the method, on the basis that coal does not need to be pretreated, the performance of the direct coal fuel cell is improved by directly adding a certain amount of basic carbonate into the coal powder.

The present invention relates to the technical field of chemical product preparation, and more specifically, to a method for preparing high-purity basic copper carbonate. The key technical solution comprises the following steps: S1, obtaining an ammonium carbonate solution; S2, adding a copper-containing compound to the ammonium carbonate solution, stirring in a water bath, and separating the solid and liquid after the reaction is complete to obtain a copper-based precursor and ammoniacal copper carbonate solution; S3, adding the copper-based precursor to water, heating and decomposing the solution under negative pressure to obtain high-purity basic copper carbonate; S4, heating and decomposing the ammoniacal copper carbonate solution under negative pressure to obtain ordinary basic copper carbonate. The present invention has the advantages of reducing raw material costs and increasing the purity and yield of basic copper carbonate.